Updates emitter.LaunchProcesses to use new Default process feild

- Makes the output more like a formatted table

scribe/emitter.go

@@ -89,11 +89,26 @@ Entries:
 func (e Emitter) LaunchProcesses(processes []packit.Process, processEnvs ...map[string]packit.Environment) {
 	e.Process("Assigning launch processes:")
 
+	var (
+		typePadding int
+	)
+
 	for _, process := range processes {
-		p := fmt.Sprintf("%s: %s", process.Type, process.Command)
+		if len(process.Type) > typePadding {
+			typePadding = len([]byte(process.Type))
+		}
+	}
+
+	for _, process := range processes {
+		pad := typePadding + len(process.Command) - len(process.Type)
+		p := fmt.Sprintf("%s: %*s", process.Type, pad, process.Command)
 
 		if process.Args != nil {
-			p = fmt.Sprintf("%s %s", p, strings.Join(process.Args, " "))
+			p += " " + strings.Join(process.Args, " ")
+		}
+
+		if process.Default {
+			p += " " + "(default)"
 		}
 
 		e.Subprocess(p)

scribe/emitter_test.go

@@ -47,7 +47,6 @@ func testEmitter(t *testing.T, context spec.G, it spec.S) {
 			}
 		})
 
-
 		it("prints details about the selected dependency", func() {
 			emitter.SelectedDependency(entry, dependency, now)
 			Expect(buffer.String()).To(ContainLines(
@@ -236,6 +235,7 @@ func testEmitter(t *testing.T, context spec.G, it spec.S) {
 				{
 					Type:    "web",
 					Command: "web-command",
+					Default: true,
 				},
 				{
 					Type:    "some-other-type",
@@ -250,8 +250,8 @@ func testEmitter(t *testing.T, context spec.G, it spec.S) {
 
 			Expect(buffer.String()).To(ContainLines(
 				"  Assigning launch processes:",
-				"    some-type: some-command",
-				"    web: web-command",
+				"    some-type:       some-command",
+				"    web:             web-command (default)",
 				"    some-other-type: some-other-command some args",
 				"",
 			))
@@ -280,8 +280,8 @@ func testEmitter(t *testing.T, context spec.G, it spec.S) {
 
 				Expect(buffer.String()).To(ContainLines(
 					"  Assigning launch processes:",
-					"    some-type: some-command",
-					"    web: web-command",
+					"    some-type:       some-command",
+					"    web:             web-command (default)",
 					`      ANOTHER_WEB_VAR -> "another-env"`,
 					`      WEB_VAR         -> "some-env"`,
 					"    some-other-type: some-other-command some args",